I'm using Google Play Services to show an AdMob banner in my game.
It seemed to be working fine (test banners load and refresh), but today I discovered something and I need help. When I start the game, I get the AdMob test banner. As the game is played, every 60 seconds a new test ad is loaded (I see messages in the Application Output that say "Ad finished loading.") This is all correct. However...
Today I discovered that, during game play, if the screen is turned off and then back on, new ads fail to load from that point on. I can still see the banner ad (and even click it), but every 60 seconds the Application Output says "Ad is not visible. Not refreshing ad." Play Services seems to think the banner is no longer visible and it doesn't load a new ad.
I'm hoping somebody has come across this issue before me and figured it out.
Edit: forgot to mention this is all Android. I need to test iOS (doing that right now).
Edit 2: iOS works fine.